Display frame



FIG. 1 is a front perspective view of the display frame;

FIG. 2 is a front elevational view of the display frame;

FIG. 3 is a back elevational view of the display frame;

FIG. 4 is a left side elevational view of the display frame;

FIG. 5 is a top plan view of the display frame; and,

FIG. 6 is a bottom plan view of the display frame.

The broken line is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a display frame, as shown and described. 